[IPython-dev] test_prefilter.py failure

I've installed IPython 0.9.1 and ran the test_prefilter.py file that
came with the install. I got a single error and would like to know if
this is an expected test failure.
-David M
>python test_prefilter.py
192 tests run, 1 failure
Expected handle_normal to be called for ' ', instead None called